型号:
public class FullPrice
{
public IEnumerable<Service> Services { get; set; }
}
视图模型:
@model hotel.Models.FullPrice
@foreach(Service service in Model.Services)
{
//
}
查看:
#rightPanal {
position: absolute;
top: 50%;
}
我的视图模型为NULL。为什么呢?
答案 0 :(得分:2)
模型将 NULL ,因为正在执行视图时,当前没有实例。
通常,将模型实例传递到视图中的方法将在相应的操作方法中,如
public View myActionMethod()
{
hotel.Models.FullPrice model = new hotel.Models.FullPrice();
model.Services = new List<Service>();//Also prevent NULL exception with this property
return View(model);
}
答案 1 :(得分:1)
我想这不是模型什么是null,而是public class RemoteImageToImageViewAsyncTask extends AsyncTask<Void, Void, Void> {
ImageView imageView;
String url;
File output;
public RemoteImageToImageViewAsyncTask(ImageView imageView, String url, File output) {
this.imageView = imageView;
this.url = url;
this.output = output;
}
@Override
protected Void doInBackground(Void... params) {
// Downloads the image from url to output
ImageDownloader.download(url, output);
return null;
}
@Override
protected void onPostExecute(Void params) {
Picasso.with(context)
.load(output)
.into(imageView);
}
}
。将操作代码更改为
Services
答案 2 :(得分:0)
将ViewModel代码更改为
echo $(ifconfig eth0 | grep 'inet addr:' | cut -d: -f2 | cut -d' ' -f1) $(hostname) localhost >> /etc/hosts
所以当你这样做时public class FullPrice
{
public FullPrice()
{
this.Services = new List<Service>();
}
public IEnumerable<Service> Services { get; set; }
}
属性不会为空
Services